/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  

*

*/

#ifndef __WRITERCONTROLLER_H__

#define __WRITERCONTROLLER_H__

// system includes

#include <utf.h>

#include <e32cmn.h>

// The user-interface to the sampling device driver sued by the profiling engine

// user includes

#include <piprofiler/ProfilerConfig.h>

#include <piprofiler/ProfilerVersion.h>

#include <piprofiler/WriterPluginInterface.h>

#include "WriterPluginLoader.h"

/*

 *	Forward declarations

 */

class TBapBuf;

class CWriterPluginLoader;

class CWriterPluginInterface;

/**

 * The writer controller for handling the available Data writer plugins.

 */

class CWriterController : public CBase, MWriterPluginLoadObserver

	{

public:

	static CWriterController* NewL(CProfilerSampleStream& aStream);

	void ConstructL();

	CWriterController(CProfilerSampleStream& aStream);

    ~CWriterController();

	/** 

	 * 

	 * Methods for user mode sampling

	 * 

	 **/

	/** Initialise the user mode samplers **/					

	void InitialiseWriterListL();

	/* Overrider of MSamplerPluginLoaderObserver class **/

	void HandlePluginLoaded( KWriterPluginLoaderStatus /*aStatus*/ );

	/* returns the matching plugin Uid */

	TUid GetPluginUID(TInt traceId);

	CWriterPluginInterface* GetActiveWriter();

	 /** Returns the sampler type (kernel/user) **/

	TUint32 GetWriterType(TUint32 samplerId);

	/** Set additional settings for a trace **/			

	TInt AdditionalUserTraceSettings(TInt traceId, TInt settings);

	/** Set data stream for samplers **/

	//void SetSampleStream(RProfilerSampleStream* iStream);

	TInt StartSelectedPlugin();

	void StopSelectedPlugin();

	/** Set selected plugin active **/

	void SetPluginActive(TUid uid, const TWriterPluginValueKeys aKey);

	TInt SetPluginSettings(TUid aUid, TDes& aDes);

	/** Get settings for a specific plugin **/

	void GetPluginSettings(TUid uid, TDes& aVal);

	/** Request stream read **/

	//void FillThisStreamBuffer(TBapBuf* aBuffer, TRequestStatus& aStatus);

	CWriterPluginInterface* GetPlugin(TUid aUid);

	CArrayPtrFlat<CWriterPluginInterface>* GetPluginList();

	void InitialisePluginStream();

public:

    CArrayPtrFlat<CWriterPluginInterface>* iPluginArray;

    // Asynchronous loader for the writer plug-ins.

    CWriterPluginLoader* iPluginLoader;

    // UID of the selected plugin in the container's lbx.

    TUid iSelectedPluginUid;

    CProfilerSampleStream& iStream;

};

#endif	// __WRITERCONTROLLER_H__